This specialised manual focus lens for Micro Four Thirds system cameras sports an incredibly fast f/0.95 maximum aperture, which should allow image and video recording in very low light conditions with a very shallow depth of field. Due to the very large maximum aperture and use of aspherical optics, this lens costs a fair amount. In this review, we'll take a look how it performs and whether the high price tag is really worth it.

Voigtlander 17.5mm f/0.95 Nokton Micro Four Thirds Handling and features

Compared to other prime lenses designed for the Micro Four Thirds camera system, this lens is quite large and heavy, weighing 560g and being 80mm long. Due to the size and weight of this optic, it may feel a little cumbersome to use on some of the more compact MFT bodies available, but it feels good to use on the Panasonic Lumix DMC-G3 used for testing, partially due to the size of the camera, and the finger grip, which adds extra stability.

Materials used in the construction of this lens are of the highest order. Plenty of metal has been used, which adds to the quality feel of the lens. The manual focus action is silky smooth and can be adjusted with the lightest of touches. Given that depth of field is very shallow at maximum aperture, extreme care needs to be taken to get images properly focused with these settings. Most MFT cameras have a facility for magnifying the image during focusing and it is best to take advantage of this feature. A useful hyperfocal scale is provided on the lens for aperture values between f/4 and f/16. A minimum focus distance of 15cm is great for shooting in claustrophobic environments, or for taking frame filling close up images.

A unique design has been implemented for the aperture ring. The aperture range is divided into half stop intervals, with a smooth clicking action between each setting. The click-stops can be disengaged by sliding and rotating a bezel in front of the aperture ring, allowing the aperture setting to be seamlessly adjusted, which is a boon for people who wish to use the lens for both video and still photography.

A 58mm filter thread is supplied, which does not rotate during focusing. This makes the lens ideal for use with graduated or polarising filters. A compact metal lens hood that screws into the filter thread is also supplied.

Voigtlander 17.5mm f/0.95 Nokton Micro Four Thirds Performance

For a lens with a maximum aperture of f/0.95, performance wide open is surprisingly good in the centre of the frame, just scraping good levels of clarity. Although the quality towards the edges of the frame is fairly poor, this is to be expected from a lens with such a fast maximum aperture, and may even be considered to add to the effect this lens produces.

Resolution @ 17.5mm

How to read our charts

The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges. Averaging them out gives the red weighted column.

The scale on the left side is an indication of actual image resolution. The taller the column, the better the lens performance. Simple.

Stopping down just over one stop to f/1.4 improves sharpness in the centre of the frame to excellent levels and the clarity towards the edges of the frame starts to approach fair levels. Peak sharpness across the frame is achieved at f/5.6, where clarity is excellent across the frame.

Chromatic aberration @ 17.5mm

How to read our charts

Chromatic aberration is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Apochromatic lenses have special lens elements aspheric, extra-low dispersion etc. to minimize the problem, hence they usually cost more.

As might be expected from a lens with such a fast maximum aperture, levels of chromatic aberrations are on the high side towards the edges of the frame, exceeding one pixel width at wide apertures. As the lens is stopped down fringing improves, remaining acceptable between f/2.8 and f/11. The fringing at wide apertures may start to become noticeable in images, especially those with high contrast towards the edges of the frame.

Falloff of illumination towards the corners of the frame is pretty well controlled, given the extremely fast maximum aperture. At f/0.95 the corners ar 2.4 stops darker than the centre of the frame and illumination is visually uniform with the aperture stopped down to f/2.8 and beyond.

Typically of lenses with a fast maximum aperture, slight barrel distortion is present. Imatest detected 1.69% barrelling, which can occasionally pose issues, especially when shooting close up. The distortion pattern is uniform across the frame, so applying corrections in image editing software afterwards should be a straightforward affair.

Flare and loss of contrast when shooting into the light are rarely an issue with this lens and the supplied hood does a reasonable job of shielding the front element from extraneous light that may cause issues. Contrast levels drop at wider apertures in all shooting conditions, which is fairly typical of very fast lenses and may even be considered to add to the effect produced.

Voigtlander Nokton 17.5mm f/0.95 Sample Photos

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Value for Money

This lens is currently available for around £1100, which isn't that bad value for money when compared with very fast lenses for 35mm camera systems. There currently isn't all that much to compare this lens two which offers a similar aperture or range of features in the Micro Four Thirds range.

Voigtlander 17.5mm f/0.95 Nokton Micro Four Thirds Verdict

By its very nature, this fast aperture lens isn't for everyone. The price alone may be a step too far for many. But for those interested in having one of the fastest lenses currently available for the Micro Four Thirds system, either for exploiting the shallow depth of field effect offered by the f/0.95 maximum aperture, or for the step-less aperture adjustment feature, there is little to be disappointed with.

Sharpness in the centre is impressive for a lens with such a fast maximum aperture and it just gets better as the lens is stopped down. The quailty feel delivered by the materials and workmanship is of a level normally reserved for Leica and Zeiss lenses, which generally cost a fair bit more.

The Voigtlander 17.5mm f/0.95 Nokton does not disappoint with impressive sharpness and quality construction.

This looks like an incredible lens! I now want to get a micro-4/3 system . . . probably the new Panasonic DMC-GX7 or Olympus OM-D E-M1 with this Voigtlander 17.5mm f.95 and the Voigtlander 25mm f.95 too. I'd also like the Panasonic holy trinity (7-14mm, 12-35mm f2.8, and 35-100mm f2.8).

This looks like an incredible lens! I now want to get a micro-4/3 system . . . probably the new Panasonic DMC-GX7 or Olympus OM-D E-M1 with this Voigtlander 17.5mm f.95 and the Voigtlander 25mm f.95 too. I'd also like the Panasonic holy trinity (7-14mm, 12-35mm f2.8, and 35-100mm f2.8).